Reply To: Previous and next get fileds

• vantranclassic

• May 2, 2017 at 10:59 pm

Hello John,
I access to the dababase and find in column meta_value, i seem something like field_585d2d2af8d69. Are they field key?

Then i try edit your code and run test:

add_action('acf/save_post', 'my_acf_save_post', 1);
function my_acf_save_post() 
{
    // you need the field key of the field you want to check
    $field_to_check_key = 'field_585d2d2af8d69';
    var_dump($field_to_check_key);

    $old_value = get_field('luc_nham_0_can', 339, false);  // 339 is curent post ID
    var_dump($old_value);
    // see if it is different than new value
    // also make sure the field key is set
    if (isset($_POST['acf'][$field_to_check_key]) &&
        $old_value != $_POST['acf'][$field_to_check_key]) 
    { 
        echo 'Hello the Wolrd';      // Test if the field has changed.
    }
  
  // Test current fields
  $curent_field = get_field('luc_nham_0_can');
  var_dump($curent_field);
}

// Shortcode to test
add_shortcode('tess', 'my_acf_save_post');

I try to change the testing field many time, but $old_value has updated same $curent_field, it not keep old value.

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